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2-亚甲基环戊酮 | 1489-50-5

中文名称
2-亚甲基环戊酮
中文别名
Α-亚甲基环戊酮
英文名称
2-methylenecyclopentanone
英文别名
2-methylidenecyclopentan-1-one
2-亚甲基环戊酮化学式
CAS
1489-50-5
化学式
C6H8O
mdl
MFCD11046531
分子量
96.1289
InChiKey
SLRKFRUSEKUSAF-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    55-56 °C(Press: 15 Torr)
  • 密度:
    0.95±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    1
  • 重原子数:
    7
  • 可旋转键数:
    0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.5
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

SDS

SDS:800e3204e8c8d5b812f04f0eeca002cb
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反应信息

  • 作为反应物:
    描述:
    2-亚甲基环戊酮氢气 作用下, 以 氘代苯 为溶剂, 70.0 ℃ 、506.66 kPa 条件下, 反应 6.0h, 以100%的产率得到2-甲基环戊酮
    参考文献:
    名称:
    在金属-有机骨架中原位生成和固定活化的 Rh 络合物催化剂以在低 H2 压力下加氢
    摘要:
    从安全的角度来看,在低 H2 压力气氛下的加氢反应很受关注,因为 H2 气体在空气中高度易燃,并且在火花、热量或阳光下会引发爆炸。在这项工作中,Rh 络合物催化剂-MOF 杂化物被新合成并用作烯烃底物加氢的催化剂。由于在固定化过程中 Rh 络合物催化剂的活化和 MOF 固有的气体冷凝特性,所得复合材料显示出比络合物催化剂本身更高的催化活性。值得注意的是,该复合材料即使在不能单独支持配合物催化剂反应的低 H2 压力下也能保持其催化活性。此外,与复合催化剂相比,复合材料即使在没有溶剂的情况下也能保持其催化活性,
    DOI:
    10.1002/ejic.201700993
  • 作为产物:
    参考文献:
    名称:
    Muehlstaedt,M. et al., Journal fur praktische Chemie (Leipzig 1954), 1965, vol. 29, p. 158 - 172
    摘要:
    DOI:
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文献信息

  • Yield and selectivity enhancement by trimethylsilyl chloride in the conjugate addition of stabilized organolithiums
    作者:Hong Liu、Theodore Cohen
    DOI:10.1016/0040-4039(95)01919-9
    日期:1995.12
    The yield and selectivity in the conjugate addition of some stabilized organolithiums to α,β-unsaturated carbonyl compounds, especially easily polymerized ones, are increased in the presence of trimethylsilyl chloride, alone or in combination with hexamethylphosphoric triamide. E-silyl enol ethers bearing the versatile phenylthio group are obtained prior to hydrolysis. Some synthetic uses are demonstrated
    在三甲基甲硅烷基氯的存在下,单独或与六甲基磷酸三酰胺结合使用,可以稳定地将某些稳定的有机锂共轭添加到α,β-不饱和羰基化合物中,尤其是易于聚合的化合物中,从而提高收率和选择性。在水解之前,获得带有通用的苯硫基的E-甲硅烷基烯醇醚。证明了一些合成用途。
  • Highly Enantioselective Construction of a Chiral Spirocyclic Structure by the [2 + 2 + 2] Cycloaddition of Diynes and <i>exo</i>-Methylene Cyclic Compounds
    作者:Kyoji Tsuchikama、Yusuke Kuwata、Takanori Shibata
    DOI:10.1021/ja064257u
    日期:2006.10.1
    The enantioselective [2 + 2 + 2] cycloaddition of 1,6-diynes with alpha-methylene lactones and cyclic ketones gave various chiral spirocyclic compounds. The reaction proceeded with high enantioselectivity when the rhodium-xylylBINAP complex was used as a chiral catalyst. Not only exo-methylene cyclic compounds but also exo-methylene acyclic compounds could be used as coupling partners for diynes. The
    1,6-二炔与α-亚甲基内酯和环酮的对映选择性[2+2+2]环加成得到各种手性螺环化合物。当铑-二甲苯基BINAP配合物用作手性催化剂时,反应以高对映选择性进行。不仅外型亚甲基环状化合物而且外型亚甲基无环化合物都可以用作二炔的偶联伙伴。本协议提供对具有四元碳中心(包括螺环系统)的新手性库的访问。
  • Preparation of 1,1-disubstituted ethylene compounds
    申请人:BASF Aktiengesellschaft
    公开号:US04997955A1
    公开(公告)日:1991-03-05
    1,1-disubstituted ethylene compounds of the general formula I ##STR1## where Z is COOR.sup.2, CN or COR.sup.3, R.sup.1 is an aliphatic, cycloalophatic, araliphatic, aromatic or heterocyclic radical which may be further substituted by functional groups which are inert under the reaction conditions, R.sup.2 is an aliphatic, cycloaliphatic or araliphatic radical of 1 to 15 carbon atoms and R.sup.3 is an aliphatic, cycloaliphatic or araliphatic radical of 1 to 15 carbon atoms which may be substituted by groups which are inert under the reaction conditions, and R.sup.1 together with R.sup.2 or R.sup.1 together with R.sup.3 may furthermore form an alkylene chain of 2 to 10 carbon atoms which may be substituted by groups which are inert under the reaction conditions, are prepared from a formyl compound of the general formula II ##STR2## where Z, R.sup.1, R.sup.2 and R.sup.3 have the above meanings, by a process in which the reaction is carried out in the presence of formaldehyde or paraformaldehyde and (a) a C.sub.1 -C.sub.12 -alkanol or (b) a mixture of a C.sub.1 -C.sub.12 -alkanol and water or (c) with water in the presence of a secondary amine and a protic acid at from 0.degree. to 200.degree. C.
    通式I的1,1-二取代乙烯化合物如下:其中Z为COOR.sup.2、CN或COR.sup.3,R.sup.1为脂肪、环脂肪、芳基脂肪、芳香族或杂环基团,可能进一步被在反应条件下惰性的官能团取代,R.sup.2为1至15个碳原子的脂肪、环脂肪或芳基脂肪基团,R.sup.3为1至15个碳原子的脂肪、环脂肪或芳基脂肪基团,可能被在反应条件下惰性的基团取代,且R.sup.1与R.sup.2或R.sup.1与R.sup.3还可以形成2至10个碳原子的烷基链,该链可能被在反应条件下惰性的基团取代,这些化合物是从通式II的甲醛化合物制备而来:其中Z、R.sup.1、R.sup.2和R.sup.3具有上述含义,通过在甲醛或多聚甲醛的存在下进行反应,以及(a)C.sub.1-C.sub.12-醇或(b)C.sub.1-C.sub.12-醇和水的混合物或(c)在二级胺和具有质子的酸存在下与水在0°C至200°C范围内进行反应的方法。
  • Efficient, direct α-methylenation of carbonyls mediated by diisopropylammonium trifluoroacetate
    作者:Alejandro Bugarin、Kyle D. Jones、Brian T. Connell
    DOI:10.1039/b924577d
    日期:——
    A very efficient method for the direct α-methylenation of carbonyl compounds, with yields up to 99%, utilizing paraformaldehyde, diisopropylammonium trifluoroacetate, and catalytic acid or base, is presented.
    介绍了一种直接将羰基化合物进行α-亚甲基化的非常高效的方法,产率高达99%,该方法利用了多聚甲醛、二异丙基胺三氟乙酸盐以及催化量的酸或碱。
  • α-alkylation and α-alkylidenation of carbonyl compounds by o-silylated enolate phenylthioalkylation
    作者:Ian Paterson
    DOI:10.1016/s0040-4020(01)86667-9
    日期:1988.1
    For many reactions next to a carbonyl group, the use of O-silylated enolate chemistry offers improvements in yield and selectivity over the corresponding reactions of Group I metal enolates. In the case of α-alkylation of carbonyl compounds, Lewis-acid (TiCL4 or ZnBr2) promoted phenylthioalkylation of O-silylated enolates 3 by α-chlorosulphides 4 (R3=H, Me, Prn, Pri, But, and Me3Si), followed by reductive
    对于羰基旁边的许多反应,使用O-甲硅烷基化的烯醇盐化学方法比第I组金属烯醇盐的相应反应提供了更高的产率和选择性。在羰基化合物,路易斯酸(的TiCl 4的α-烷基化的情况下,4或ZnBr 2)促进了phenylthioalkylation ö -silylated烯醇化物3由α-chlorosulphides 4(R 3 = H,Me中,镨Ñ,镨我,卜吨,和Me 3 Si),然后通过阮内镍从5→6进行还原性硫去除,被认为是此合成上重要的CC键形成步骤的可靠方法。一种替代硫消除途径经由5→7的亚砜可使羰基化合物进行区域和立体控制的α-亚烷基化。苯硫基烷基化反应适用于酮,醛,酯和内酯。
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